diff --git a/src/rootserver/freeze/ob_major_merge_scheduler.cpp b/src/rootserver/freeze/ob_major_merge_scheduler.cpp
index 2cefdf80c7..df5bc30725 100644
--- a/src/rootserver/freeze/ob_major_merge_scheduler.cpp
+++ b/src/rootserver/freeze/ob_major_merge_scheduler.cpp
@@ -578,9 +578,13 @@ int ObMajorMergeScheduler::update_merge_status(const int64_t expected_epoch)
             cur_all_merged_scn = progress->smallest_snapshot_version_;
           }
 
-          if ((last_merged_scn < cur_all_merged_scn) || (ori_all_merged_scn > cur_all_merged_scn)) {
+          // cur_all_merged_scn >= last_merged_scn
+          // 1. Equal: snapshot_version of all tablets change to frozen_scn after major compaction
+          // 2. Greater: In backup-restore situation, tablets may have higher snapshot_version, which 
+          // is larger than current frozen_scn. https://work.aone.alibaba-inc.com/issue/45933591
+          if ((cur_all_merged_scn < last_merged_scn) || (ori_all_merged_scn > cur_all_merged_scn)) {
             ret = OB_ERR_UNEXPECTED;
-            LOG_WARN("unexpect version", KR(ret), K(last_merged_scn), K(cur_all_merged_scn),
+            LOG_ERROR("unexpect merge scn", KR(ret), K(last_merged_scn), K(cur_all_merged_scn),
               K(ori_all_merged_scn));
           } else {
             // TODO 'zone merge finish' & 'zone all tablet merge finish' should be handled in same procedure.
diff --git a/src/rootserver/freeze/ob_zone_merge_manager.cpp b/src/rootserver/freeze/ob_zone_merge_manager.cpp
index 475ddaba51..b8145d8d68 100644
--- a/src/rootserver/freeze/ob_zone_merge_manager.cpp
+++ b/src/rootserver/freeze/ob_zone_merge_manager.cpp
@@ -372,8 +372,7 @@ int ObZoneMergeManagerBase::finish_zone_merge(
 
   if (OB_FAIL(check_valid(zone, idx))) {
     LOG_WARN("fail to check valid", KR(ret), K(zone), K_(tenant_id));
-  } else if ((last_merged_scn <= 0) || (all_merged_scn <= 0)
-             || (all_merged_scn > last_merged_scn)) {
+  } else if ((last_merged_scn <= 0) || (all_merged_scn <= 0)) {
     ret = OB_INVALID_ARGUMENT;
     LOG_WARN("invalid argument", KR(ret), K(zone), K_(tenant_id),
              K(last_merged_scn), K(all_merged_scn));
@@ -393,7 +392,7 @@ int ObZoneMergeManagerBase::finish_zone_merge(
     } else {
       ObZoneMergeInfo::MergeStatus status = static_cast<ObZoneMergeInfo::MergeStatus>(
         zone_merge_infos_[idx].merge_status_.value_);
-      if (last_merged_scn != zone_merge_infos_[idx].last_merged_scn_) {
+      if (last_merged_scn > zone_merge_infos_[idx].last_merged_scn_) {
         const int64_t is_merging = 0;
         tmp_info.is_merging_.set_val(is_merging, true);
         tmp_info.last_merged_scn_.set_val(last_merged_scn, true);